## Chemistry: The Molecular Science (5th Edition)

There are $0.0731$ moles of $Ca(NO_3)_2$.
Calculate the molar mass for $Ca(NO_3)_2:$ 40.08* 1 + 2 * ( 14.01* 1 + 16.00* 3 ) = 164.10g/mol Calculate the number of moles on $12.0g$: $12.0g \times \frac{1 mole}{164.10g} = 0.0731 moles$